$grid: (
    //
    1: (1),
    2: (1),
    3: (1, 2),
    4: (1, 2, 3),
    5: (1, 2, 3, 4),
    6: (1, 2, 3, 4, 5),
    7: (1, 2, 3, 4, 5, 6),
    8: (1, 2, 3, 4, 5, 6, 7),
    9: (1, 2, 3, 4, 5, 6, 7, 8),
    10: (1, 2, 3, 4, 5, 6, 7, 8, 9),
    11: (1, 2, 3, 4, 5, 6, 7, 8, 9, 10),
    12: (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
);
